《2025年阳光同学计算小达人五年级数学下册冀教版》

1. 直接写出得数。（建议2分钟完成）
$72 \times \frac{7}{12} =$ $48 \times \frac{5}{16} =$ $\frac{1}{7} \times 35 =$ $\frac{3}{44} \times 11 =$
$28 \times \frac{5}{8} =$ $\frac{7}{9} \times 36 =$ $39 \times \frac{7}{13} =$ $\frac{3}{5} \times 10 =$
$\frac{4}{5} \times 6 =$ $105 \times \frac{1}{7} =$ $\frac{3}{8} \times 56 =$ $21 \times \frac{5}{7} =$
$51 \times \frac{3}{17} =$ $23 \times \frac{3}{23} =$ $48 \times \frac{5}{6} =$ $\frac{9}{88} \times 22 =$

答案： 42@@15@@5@@$\frac{3}{4}$@@$\frac{35}{2}$@@28@@21@@6@@$\frac{24}{5}$@@15@@21@@15@@9@@3@@40@@$\frac{9}{4}$

2. 计算下面各题。（建议6分钟完成）
$10 \times \frac{2}{5} - \frac{5}{8}$ $\frac{3}{10} \times \frac{5}{3} + \frac{1}{4}$ $\frac{2}{11} \times \frac{3}{2} + \frac{3}{2}$
$\frac{11}{12} \times \frac{2}{3} + \frac{5}{6}$ $\frac{4}{9} \times (\frac{5}{6} - \frac{2}{3})$ $(\frac{1}{4} + \frac{2}{3}) \times \frac{5}{11}$
$\frac{17}{9} - \frac{14}{15} \times \frac{10}{7}$ $\frac{15}{8} - \frac{9}{14} \times \frac{7}{3}$ $\frac{3}{10} \times (\frac{1}{4} + \frac{1}{6})$

答案： $3\frac{3}{8}$@@$\frac{3}{4}$@@$\frac{39}{22}$@@$\frac{13}{9}$@@$\frac{2}{27}$@@$\frac{5}{12}$@@$\frac{5}{9}$@@$\frac{3}{8}$@@$\frac{1}{8}$

照样子，填一填。
$\frac{4}{7} - \frac{4}{11} = \frac{4}{7} \times \frac{4}{11}$ $\frac{5}{8} - \frac{5}{13} = \frac{5}{8} \times \frac{5}{13}$
$\frac{7}{9} - (\ \ \ \ ) = \frac{7}{9} \times (\ \ \ \ )$ $(\ \ \ \ ) - \frac{1}{4} = (\ \ \ \ ) \times \frac{1}{4}$
再写一个：____________________

答案： $\frac{7}{16}$@@$\frac{7}{16}$@@\frac{1}{3}$@@$\frac{1}{3}$@@示例：$\frac{2}{3}-\frac{2}{5}=\frac{2}{3}\times\frac{2}{5}$